Method for processing high accuracy high strength bolt

A technology of high-strength bolts and processing methods, which is applied in the direction of screws, threaded fasteners, connecting components, etc., can solve the problems that bolt joints cannot meet the requirements of use, the thread processing of dies cannot meet the requirements, and the efficiency of turning threads is low. Achieve the effects of saving clamping length, less margin for finishing turning, and high processing efficiency

Inactive Publication Date: 2007-04-11
贵州凯星液力传动机械有限公司
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AI Technical Summary

Problems solved by technology

Due to different occasions and requirements, standard bolted joints often cannot meet the requirements of use. When the required quantity is not very large, enterprises usually process it by themselves.
Because it is not a professional manufacturer of bolts, it is often difficult for enterprises to control quality when processing high-precision, high-strength bolts in small batches, and the processing cost is high
The efficiency of thread turning with ordinary lathe is low, and the quality is not easy to control; the thread processing with dies cannot meet the requirements

Method used

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  • Method for processing high accuracy high strength bolt

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Embodiment Construction

[0014] Embodiment of the present invention: the method for processing hex bolt

[0015] It comprises the following steps; as shown in Figure 1, a, stock preparation, prepare the hexagonal 40Cr bar stock according to the hexagonal bolt of processing; In order to reduce the cutting amount, the number of hexagonal bolts that can be processed by each 40Cr bar stock is preferably 2 Integer multiples.

[0016] b. Rough turning, cut the prepared hexagonal 40Cr rod blank into sections, so that each blank section 1 obtained after cutting into sections can process two hexagonal bolts, and then cut the two ends of the blank section 1 on a common lathe. The position of the processed thread and size is turned into a cylinder, and a cutting groove 3 is turned in the middle of the blank section 1; the cutting groove 3 is smaller than the outer dimension of the blank section 1, and the width and depth of the cutting groove 3 are to ensure that the cutter does not break when cutting. knife is...

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Abstract

The process of producing high accuracy and high strength bolt includes preparing material, coarse turning, heat treatment, finish turning and other steps. The present invention machines two bolt simultaneously with one blank to facilitate fastening and save required fastening length. The present invention combines common lathe with numerically controlled lathe, and has the features of lowered machining cost, high bolt quality, less finish turning margin, high efficiency, high bolt precision, etc.

Description

Technical field: [0001] The invention relates to a bolt processing method, in particular to a high-precision, high-strength bolt (such as common hexagon head bolts and square head bolts) processing method. Background technique: [0002] With the rapid development of the machinery manufacturing industry, many mechanical fields require the use of high-precision, high-strength bolts. Due to the different occasions and requirements of use, standard bolted joints often cannot meet the requirements of use. When the required quantity is not very large, enterprises usually process it by themselves. Since it is not a professional manufacturer of bolts, it is often difficult for enterprises to control quality when processing high-precision, high-strength bolts in small batches, and the processing cost is high. The efficiency of thread turning with ordinary lathe is low, and the quality is not easy to control; the thread processing with dies cannot meet the requirements. Invention c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B35/00
Inventor 曾平安叶义书
Owner 贵州凯星液力传动机械有限公司
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